Heating appliance



Oct-.20, 1936. P. c. PEDERSON 2,058,254

HEATING APPLIANCE Filed Sept. 1o, 19s4 INVENTOR.

ATTORNEY.

Patented Got. 20, 1936 Paul 0. Pederson,l)uluth, Minn.

Application September 10, 1934, Serial No. 743,386

'3 Claims.

such as stoves or furnaces, and the principal'ob ject is to produce a more efilcient unit of this type than heretofore known, and one in which air is 5 circulated by force in conjunction therewith.

other objects and advantages of the novel structure will appear from the following description thereof.

Referring now to the accompanying drawing,

forming part of this application, and wherein like reference characters indicate like parts:

Figure 1. is a central vertical section throug a stove embodying the invention.

Figure 2 is a reduced top view of the box i5 section of the stove.

Figure 3 is a top plan view of the stove, illustrating the smoke flue.

'The body portion ofthe stove-is preferably made of three separable sections, I, 2 and 3 indi- 20 cating the base portion, while 4 represents'the fire pot section and 5 the top section or combustion chamber. jacket which rests upon the portion I of the base.

Thebase portion I2-3 is somewhat pyrami- 25 dal in form, in that it tapers upwardly-from all sides, being preferably circular in shape, that portion surrounded by the section I fonning an inlet air chamber, the walls of which are provided with any desired number and form of open- 30 ings as illustrated at 1. Above this section the portion is somewhat smaller in diameter forming a stepped annular ledge which functions conveniently in receiving the jacket 6.

Within the chamber formed by the section 2 35 is installed the fan 8 and the electric motor 9 which is supported as by a spider Ill intermediate of the two sections I and 2. The section 3 is still smaller in diameter, the surface of which is incllned materially toward a circular central open- 40 ing for the reception of the smaller end of the section 5 of the stove and is spider like inform for the reception of the lower ends of the radiating fins It so that air is-freely forced through the section 3 intermediate of said fins. The sec- 45 tion 3 is of inverted truncated cone shape with the smaller lower end I I extending downwardly within the base portion in fairly close proximity to the fan, and this portion functions as an .ash pit, or for the reception of and removal of an ash pan as indicated at I2. The grates of the stove occur as shown at I3 at approximately the juncture of. the section 4 of the body of the stove and the base thereof, and this section 4 is illustrated as having one of its radiating fins I4 omitted, 55 providlng'room for the door 25, damper 22, and

' the stove.

6 represents the outer casing or.

. (Cl. 126-47) This invention. relates to heating appliances,

other necessary accessories for manipulation of The portionsl and 5 of the body are of similar construction, that'is-being designed to rest one upon the other with their larger diameters registering and their smaller'ends farther 5 apart, and they are further alike in that both are equipped with'registering radially extending heat conducting vanes or fins I4, these being somewhat V-shaped in crossrsection and extending well out towards the jacket. The jacket is also smallest 10 at its'two ends and of larger diameter transverse its'central portion to somewhat coincide with the shape of the body of. the stove.

These vanes or radiating fins I4 are equi-distant', and vertically disposed with the exception of the one in the front of the stove which is omitted to provide convenient room for access tothe interior of the stove, or to doors and the like.

In this manner a plurality of air conduits or channels indicated at I5 are formed wholly about the body of the stove and whenthe fan 8 is rotated by operation of the motor 9 air is driven upwardly through these channels and out the upper open end of the jacket 6 which is found to greatly augment the distribution of the heat units from the stove into the atmosphere above and about the stove.

A further novel feature of the invention is the disposition of the gases and smoke above the combustion chamber, and is accomplished by forming the wall I6 transverse the upper end of this chamber and spaced from the top thereof,'providing the annular ring'like chamber l'l intermediate the topof the section 5 and the wall I6, said latter wall being provided with the circular central opening I8 which communicates through the damper controlled opening I9 with the circular chamber H, the opposite or exhaust end of. the chamber II communicating with the pipe thimble or collar 20. A. partition ordefiector 23 is 40 interposed in the annular chamber I! at one edge of the opening I9. This partition may be swingable to constitute a form of damper if desired. The partition 23 assists in directing the air from the central opening la-into the annular chamber Il. It is apparent that the damper 22 may be controlled in any desired manner for regulating the draft of the stove. Damper 22 in the form shown is providedwith apertures adapted to register with apertures in the fire pot and by shifting registration of the two sets of apertures the draft through this damper may be controlled. H

'As additional draft control means apart from the damper 22 abov'e referred to, I have illustrated an annular damper ring 24 about the upper end of the lower portion ll of the section 4, and this damper ring is perforated and designed to control, by rotation thereof, a series of holes indicated at 25 about said portion II. For control of this damper ring I have illustrated the thumb button 26, similar to the button 21'on the damper 22. By this means it is evident that forced draft facilities may be employed at will as, when the Ian 8 is rotated and the damper 24 opened, forced draft will occur within the stove.

Having thus described my invention, what I claim anddesire to secure by Letters Patent, is:

1. A heater of the type described comprising a hollow metal base the lower portion of which freely communicates with the surrounding atmosphere, a motor driven fan installed axially within said base, a fire box section and a combustion chamber section superposed upon each other and upon said base, integrally formed radiating fins projecting laterally from said fire box section and combustion chamber section and extending longitudinally for substantially the full height of said sections, and a casing about said fins, said fire box section characterized by being of inverted frustro conical shape to insure maximum circulation of air from said motor fan, said fins traversing substantially the space between said casing and said fire box and combustion chamber sections.

2. A heating unit comprising a vertical casing having an open lower end and provided with an air discharge at its upper end, a base upon which said casing is mounted, said base having air intake passages in the lower portion thereof, a fire box section and a combustion chamber section superimposed upon each other and having closed lower and upper ends respectively and mounted in spaced relation to said casing, said fire box sec-,

tion being mounted some distance above the bottom of said base, said fire box and combustion chamber sections having continuous radiating fins extending substantially the combined full heights of said sections and substantially traversing the space between said sections and said casing, the upper portion of the interior of said base constituting a fan housing for directing air upwardly between said fins and against the peripheral walls of said sections, a fan mounted axially on said housing, walls within the upper portion of said combustion chamber defining a passageway communicating with the upper end of said combustion chamber and extending circumferentially thereof for retarding the discharge of the hot products of combustion and for increasing the amount of heat radiated at the top of said fins, and a flue connected with said passageway.

3. The structure set forth in claim 2 wherein said walls define a concentric annular passagewayin the top of said combustion chamber and a fine disposed ec'centrically of said passageway and communicating therewith for the disposition of smoke and gases. I

PAUL C. PEDERSON. 

